COMPARISON OF 1G AND 2G WELDING POSITIONS AGAINST SMAW WELDING STRENGTH WITH KAMPUH I

Abstract

National development is the development of the whole person. The implementation of the development is not limited to a single field but covers various fields, including the field of steel construction. In its application, steel structures are often unavoidable by metal splicing or a process known as welding. So, this study aims to compare SMAW welding strength with I efficacy in 1G and 2G welding positions. The method used in this study is experimental. The research data was obtained from manufacturing ST37 carbon steel specimens by SMAW welding positions 1G and 2G in potent I. This research was conducted at the Physical Metallurgy Laboratory of the Mechanical Engineering Study Program, Faculty of Engineering, Christian University of Indonesia, Paulus Makassar. Based on this study's test results and calculations, the highest tensile strength value was obtained by the weld joint in the first batch with a welding position of 1G, with an average tensile strength value of 391.8 MPa. The lowest tensile strength was found in the weld joint at the strength I, with a welding position of 2G, with an average value of 379.1 MPa. Therefore, it can be concluded that the welding position of 1G at Kampuh I with Shielded Metal Arc Welding (SMAW) is the one that is superior or stronger than the 2G welding position on the I Kampuh with Shielded Metal Arc Welding (SMAW) welding.